If you vote like the duck and campaign like the duck, people start thinking you’re a waterfowl, too.

And if you add a goony bird to the ticket, they’re likely to identify you as a fupped duck.

When the conservative Economist endorses the Democrat, you might be wise to note it’s most damning words:

At the beginning of this election year, there were strong arguments against putting another Republican in the White House. A spell in opposition seemed apt punishment for the incompetence, cronyism and extremism of the Bush presidency. Conservative America also needs to recover its vim. Somehow Ronald Reagan’s party of western individualism and limited government has ended up not just increasing the size of the state but turning it into a tool of southern-fried moralism.

The selection of Mr McCain as the Republicans’ candidate was a powerful reason to reconsider. Mr McCain has his faults: he is an instinctive politician, quick to judge and with a sharp temper. And his age has long been a concern (how many global companies in distress would bring in a new 72-year-old boss?). Yet he has bravely taken unpopular positions—for free trade, immigration reform, the surge in Iraq, tackling climate change and campaign-finance reform. A western Republican in the Reagan mould, he has a long record of working with both Democrats and America’s allies.

If only the real John McCain had been running

That, however, was Senator McCain; the Candidate McCain of the past six months has too often seemed the victim of political sorcery, his good features magically inverted, his bad ones exaggerated. The fiscal conservative who once tackled Mr Bush over his unaffordable tax cuts now proposes not just to keep the cuts, but to deepen them. The man who denounced the religious right as “agents of intolerance” now embraces theocratic culture warriors. The campaigner against ethanol subsidies (who had a better record on global warming than most Democrats) came out in favour of a petrol-tax holiday. It has not all disappeared: his support for free trade has never wavered. Yet rather than heading towards the centre after he won the nomination, Mr McCain moved to the right.

Meanwhile his temperament, always perhaps his weak spot, has been found wanting. Sometimes the seat-of-the-pants method still works: his gut reaction over Georgia—to warn Russia off immediately—was the right one. Yet on the great issue of the campaign, the financial crisis, he has seemed all at sea, emitting panic and indecision. Mr McCain has never been particularly interested in economics, but, unlike Mr Obama, he has made little effort to catch up or to bring in good advisers (Doug Holtz-Eakin being the impressive exception).

The choice of Sarah Palin epitomised the sloppiness. It is not just that she is an unconvincing stand-in, nor even that she seems to have been chosen partly for her views on divisive social issues, notably abortion. Mr McCain made his most important appointment having met her just twice.

Ironically, given that he first won over so many independents by speaking his mind, the case for Mr McCain comes down to a piece of artifice: vote for him on the assumption that he does not believe a word of what he has been saying. Once he reaches the White House, runs this argument, he will put Mrs Palin back in her box, throw away his unrealistic tax plan and begin negotiations with the Democratic Congress. That is plausible; but it is a long way from the convincing case that Mr McCain could have made. Had he become president in 2000 instead of Mr Bush, the world might have had fewer problems. But this time it is beset by problems, and Mr McCain has not proved that he knows how to deal with them.

McCain’s transformation over his life from eagle to hawk to duck certainly calls into question three central wonderings: what do conservatives conserve anymore? If McCain can’t even find any McCain to conserve, was the old McCain just a myth? Which McCain is the quack?